[Expression of long non-coding RNA H19 in prostate cancer and its effect on the proliferation and glycometabolism of human prostate cancer cells].

Objective: To study the expression of long noncoding RNA (lncRNA) H19 in human prostate cancer tissue and its effect on the glycometabolism and growth of human prostate cancer cells.

Methods: Realtime quantitative RTPCR (qRTPCR) was employed to detect the expression of lncRNA H19 in human prostate tissues from 20 patients with prostate cancer (10 cases of highGleason score prostate cancer ［HGPC］ and 10 cases of lowGleason score prostate cancer ［LGPC］) and another 5 with benign prostatic hyperplasia (BPH). After transfection of H19 siRNA into the DU145 and PC3 prostate cancer cells, the growth of the cells and the H19 expression in the cells were determined by MTT and qRTPCR respectively, and the changes in the glycometabolism of the prostate cancer cells were analyzed by measuring the contents of glucose and lactate in the culture medium. Nontransfected and transfected negative vectors were used as blank and negative controls respectively.

Results: The relative expression of H19 was significantly increased in both the HGPC and LGPC tissues (0.725±0.385 and 2.086±0.542) as compared with that in the BPH tissue (0.210±0.068) (P< 0.01), even higher in the HGPC than in the LGPC tissue (P< 0.01). After transfection of H19 siRNA, the expressions of H19 were remarkably decreased in the DU145 and PC3 prostate cancer cells in comparison with those in the blank control and negative control groups (P< 0.01), and so were the proliferation of and the glucose and lactate levels in the DU145 and PC3 cells (P< 0.01).